New and promising sites - PTR, PTC, BUX's and CASH's - are born everyday. The question is: which are going to pay?
To get a trustful answer to this question we have to spend a lot of time and thousands of clicks to reach the minimum pay-out.
Sometimes we never find it because the site dies before that! Other times we find to late that it's just another fraud or scam.
If we have a team with some dozens of members working as referrals of one of them, this guy could reach the minimum pay-out in a few days and tell everybody else about the honesty of that particular site.